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5. POQ= 150x27/30=135
6. 70x58/116=35
7. L 1/2 lingkaran - L 1/2 lingkaran
= 157 - 39,15=117,75
8. 15x168:21=120²
9. 54x40:160=13,5
10. 72/360.22/7.70=44